Patents by Inventor Haeng Sook Ro
Haeng Sook Ro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11817977Abstract: In the present invention, in classifying modulation types of a plurality of modulation signals by using a classifier (an artificial neural network model based on machine learning), the classifier may classify the modulation types of the modulation signals by using pieces of I/Q data, sampled with one sampling frequency, as input data, and thus, may quickly classify the modulation signals.Type: GrantFiled: March 31, 2022Date of Patent: November 14, 2023Assignee: Electronics and Telecommunications Research InstituteInventors: Byung Chan Kim, Kang Hee Kim, Haeng Sook Ro, Gwang Moon Park, Soo Ho Sohn, Ki Cheol Tae
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Publication number: 20230066195Abstract: In the present invention, in classifying modulation types of a plurality of modulation signals by using a classifier (an artificial neural network model based on machine learning), the classifier may classify the modulation types of the modulation signals by using pieces of I/Q data, sampled with one sampling frequency, as input data, and thus, may quickly classify the modulation signals.Type: ApplicationFiled: March 31, 2022Publication date: March 2, 2023Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Byung Chan KIM, Kang Hee KIM, Haeng Sook RO, Gwang Moon PARK, Soo Ho SOHN, Ki Cheol TAE
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Publication number: 20220381867Abstract: A directive direction finding apparatus may comprise: a directivity-enabled antenna array in which a constituent antenna or antenna subarray has directivity in the same direction; an RF/IF receiver connected to the directivity-enabled antenna array; a digital receiver connected to the RF/IF receiver; a direction finder connected to the digital receiver; a directivity control unit to control an operation of the directivity-enabled antenna array; and a transport/control interface connected to the direction finder and to manage control and operation of the directivity-enabled antenna array, the RF/IF receiver, the digital receiver, the direction finder and the directive control unit.Type: ApplicationFiled: March 10, 2022Publication date: December 1, 2022Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kang Hee KIM, Byung Chan KIM, Haeng Sook RO, Gwang Moon PARK, Soo Ho SOHN, Ki Cheol TAE
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Patent number: 11509050Abstract: There are provided a multi-bay antenna apparatus and an operation method thereof. A multi-bay antenna apparatus may include a first section, a first array antenna mounted in the first section to receive a signal in a predetermined frequency band, a second section movably coupled with the first section, and a second array antenna mounted in the second section to receive a signal in a predetermined frequency band.Type: GrantFiled: April 1, 2020Date of Patent: November 22, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Ki Cheol Tae, Kanghee Kim, Haeng Sook Ro, Gwangmoon Park, Soo-Ho Sohn, Ho Jin Lee
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Patent number: 11509054Abstract: A dipole antenna fed by a planar balun includes a first radiation element and a second radiation element respectively corresponding to poles of the dipole antenna, at least one dipole support column configured to connect the first radiation element and the second radiation element and to fix a gap between the first radiation element and the second radiation element, a planar balun connected to the first radiation element and the second radiation element and configured to feed the first radiation element and the second radiation element, and a balun housing coupled to the dipole support column and enclosing the planar balun.Type: GrantFiled: December 23, 2020Date of Patent: November 22, 2022Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Haeng Sook Ro, Kanghee Kim, Gwangmoon Park, Soo-Ho Sohn, Ki Cheol Tae
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Publication number: 20210280977Abstract: A dipole antenna fed by a planar balun includes a first radiation element and a second radiation element respectively corresponding to poles of the dipole antenna, at least one dipole support column configured to connect the first radiation element and the second radiation element and to fix a gap between the first radiation element and the second radiation element, a planar balun connected to the first radiation element and the second radiation element and configured to feed the first radiation element and the second radiation element, and a balun housing coupled to the dipole support column and enclosing the planar balun.Type: ApplicationFiled: December 23, 2020Publication date: September 9, 2021Inventors: Haeng Sook RO, Kanghee KIM, Gwangmoon PARK, Soo-Ho SOHN, Ki Cheol TAE
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Publication number: 20200365986Abstract: There are provided a multi-bay antenna apparatus and an operation method thereof. A multi-bay antenna apparatus may include a first section, a first array antenna mounted in the first section to receive a signal in a predetermined frequency band, a second section movably coupled with the first section, and a second array antenna mounted in the second section to receive a signal in a predetermined frequency band.Type: ApplicationFiled: April 1, 2020Publication date: November 19, 2020Applicant: Electronics and Telecommunications Research InstituteInventors: Ki Cheol TAE, Kanghee KIM, Haeng Sook RO, Gwangmoon PARK, Soo-Ho Sohn, Ho Jin LEE
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Patent number: 10044112Abstract: Disclosed are a variable antenna and an apparatus for detecting a radio signal. The variable antenna includes: a first receiving unit including at least one liquid metal antenna element; a second receiving unit including at least one liquid metal antenna element having a length different from a length of the first receiving unit; and a gain control unit configured to electrically adjust lengths of the liquid metal antenna elements for one of the first receiving unit and the second receiving unit according to the frequency of a received signal, wherein each antenna array realized by the liquid metal antenna elements of the first receiving unit and the second receiving unit is arranged in a single bay.Type: GrantFiled: July 14, 2016Date of Patent: August 7, 2018Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INTITUTEInventors: Gwang Moon Park, Haeng Sook Ro, Sang In Cho, Yong Seok Choi
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Publication number: 20170141482Abstract: Disclosed are a variable antenna and an apparatus for detecting a radio signal. The variable antenna includes: a first receiving unit including at least one liquid metal antenna element; a second receiving unit including at least one liquid metal antenna element having a length different from a length of the first receiving unit; and a gain control unit configured to electrically adjust lengths of the liquid metal antenna elements for one of the first receiving unit and the second receiving unit according to the frequency of a received signal, wherein each antenna array realized by the liquid metal antenna elements of the first receiving unit and the second receiving unit is arranged in a single bay.Type: ApplicationFiled: July 14, 2016Publication date: May 18, 2017Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Gwang Moon PARK, Haeng Sook RO, Sang In CHO, Yong Seok CHOI
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Patent number: 9548806Abstract: A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels.Type: GrantFiled: March 14, 2014Date of Patent: January 17, 2017Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Tae Kim, Gwangmoon Park, Seong Yun Lee, Haeng Sook Ro, Mi-Kyung Suk, Yong-Seok Choi
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Publication number: 20150171976Abstract: A wideband RF receiver includes a dual mode antenna configured to drive in an active antenna mode when a bias power is supplied thereto and to drive in a passive antenna mode when a power is not supplied thereto; and a hybrid interface apparatus configured to supply the bias power to the dual mode antenna and configured to provide a control signal that enables the dual mode antenna to drive in the active antenna mode or the passive antenna mode. Further, the wideband RF receiver includes a radio measuring and receiving apparatus configured to measure a signal level of an input value that the hybrid interface apparatus outputs the control signal.Type: ApplicationFiled: March 18, 2014Publication date: June 18, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Tae KIM, Haeng Sook RO, Gwangmoon PARK, Seong Yun LEE, Mi-Kyung SUK, Yong-Seok CHOI
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Publication number: 20150071310Abstract: A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels.Type: ApplicationFiled: March 14, 2014Publication date: March 12, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Tae KIM, Gwangmoon PARK, Seong Yun LEE, Haeng Sook RO, Mi-Kyung SUK, Yong-Seok CHOI
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Patent number: 8805644Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors.Type: GrantFiled: October 11, 2013Date of Patent: August 12, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Gwangmoon Park, Sang-Tae Kim, Seong-Yun Lee, Haeng-Sook Ro, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
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Patent number: 8766866Abstract: A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.Type: GrantFiled: June 18, 2010Date of Patent: July 1, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Haeng-Sook Ro, Gwang-Moon Park, Sang-Tae Kim, Seong-Yun Lee, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
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Patent number: 8718960Abstract: Provided is a method of selecting a white Gaussian noise sub-band using singular value decomposition (SVD). The method includes selecting a first frequency band, verifying whether a signal is included in the selected first frequency band, determining the first frequency band as a target measurement frequency when the signal is not included in the selected first frequency band, and measuring a background radio noise in the determined target measurement frequency.Type: GrantFiled: March 30, 2010Date of Patent: May 6, 2014Assignees: Electronics and Telecommunications Research Institute, University-Industry Cooperation Group of Kyung Hee UniversityInventors: Mi-Kyung Suk, Sang Tae Kim, Gwangmoon Park, Seong Yun Lee, Haeng Sook Ro, Heung Yong Kang, Yong-Seok Choi, Young Soo Kim, Seung Min Shin
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Publication number: 20140064349Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors.Type: ApplicationFiled: October 11, 2013Publication date: March 6, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Gwangmoon PARK, Sang-Tae KIM, Seong-Yun LEE, Haeng-Sook RO, Mi-Kyung SUK, Heung-Yong KANG, Yong-Seok CHOI
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Publication number: 20140044266Abstract: The present invention provides a real-time noise reduction apparatus for a radio monitoring system, including a dual channel digitizing unit configured to convert signals, subject to frequency down-conversion and inputted to two channels, into digital signals and a Digital Signal Processor (DSP) configured to reduce noise from time sample regions of the signals, received from the dual channel digitizing unit, in a time domain using a correlation method between samples through the delayed feedback means.Type: ApplicationFiled: June 20, 2013Publication date: February 13, 2014Inventors: Sang Tae KIM, Yong Seok CHOI, Gwang Moon PARK, Seong Yun LEE, Haeng Sook RO, Mi Kyung SUK
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Patent number: 8639470Abstract: A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus for single-channel direction finding includes: a digital processing unit configured to receive a signal, convert the received signal into a digital signal, reduce a sampling rate of the digital signal by using a digital down converter (DDC), and convert the digital signal into a baseband complex signal; a spectrum processing unit configured to map a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to the power levels depending on the accumulation ratio of the power levels; and a display unit configured to display the power levels with colors in order to estimate the bearing of the signal.Type: GrantFiled: August 25, 2010Date of Patent: January 28, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Gwangmoon Park, Sang-Tae Kim, Seong-Yun Lee, Haeng-Sook Ro, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
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Publication number: 20120162004Abstract: Disclosed is an apparatus and method for estimating a direction of arrival (DOA) of a signal, which improves DOA estimation performance of a reception signal having a low signal to interference and noise ratio (SINR) in a communication system. In the method, a received signal is converted into a signal of a frequency region. A noise signal is separated from the signal converted into the signal of the frequency region. A noise region is filtered by setting an occupied bandwidth from the signal having the noise signal separated therefrom. A DOA of the signal obtained through the filtering of the noise region is estimated.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Inventors: Sang-Tae KIM, Gwangmoon Park, Seong-Yun Lee, Haeng-Sook Ro, Mi-kyung Suk, Yong-Seok Choi
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Publication number: 20110148729Abstract: A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.Type: ApplicationFiled: June 18, 2010Publication date: June 23, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Haeng-Sook RO, Gwang-Moon Park, Sang-Tae Kim, Seong-Yun Lee, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi